Subtract 56/54 from 25/21
1st number: 1 4/21, 2nd number: 1 2/54
25/21 - 56/54 is 29/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
25/21 = 25 × 18/21 × 18 = 450/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
56/54 = 56 × 7/54 × 7 = 392/378 - Subtract the two like fractions:
450/378 - 392/378 = 450 - 392/378 = 58/378 - After reducing the fraction, the answer is 29/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-56/54 25/42-56/54 75/21-56/54 25/63-56/54